serious-discussion

[finite inlet]

I smoke lawn grass

[deep mango]

Hey, can you fuck off?

This is not the server to tell random people, many of whom are minors, that they should abuse stimulants they are not prescribed for academics

We should have you banned

[solid snow]

I did that without stimulants

Skill issue

[leaden torrent]

sigh

funniest thing is that that user seemed to think tobacco and weed are stimulants?

[deep mango]

Oh

I just modmailed it

Oops

[leaden torrent]

i like the idea of tobacco making you more energetic lmao

[cedar idol]

not to mention weed

[leaden torrent]

well they said that they used it to relax so presumably they know what weed does at least

and just... dont know what a stimulant is

[long matrix]

yikes, it takes a real ass to piss ryc off for real

[deep mango]

Huh

[long matrix]

u sounded pissed

[deep mango]

Can you fuck off?

[long matrix]

yeah yeah,

[deep mango]

There that sound pissed to you?

[long matrix]

no

[deep mango]

[long matrix]

[raven plaza]

Shuri changed bodies

[flint basin]

Yeah he's quite patient to put up with the lot of you

[sonic sentinel]

crazy thing i thought of

right so one challenge to government surveillance is how are you gonna process all that information

you can give it to people to interpret, but there is a risk of people trying to abuse it because they don't want to achieve a certain result (suppose person so-and-so doesn't want to end up putting person x in jail for a law they disagree with, for instance, so they lie about person x)

what if you give it to someone and make them think they are interpreting something unimportant?

maybe they believe they are training an ai, or maybe the information is abstracted enough that they don't realize it's something important

and there are some obvious drawbacks to doing this but those can be mitigated as well

like the actual info to be processsed can be mixed with other random info to prevent suspicion

and you can get multiple checks to prevent a situation where one person processing the information just decides to slack off one day or whatever

[long matrix]

[sonic sentinel]

which part confuses you

[long matrix]

the 2nd line onwards, but dont bother explaining to myself

[sonic sentinel]

myself?

[fervent flame]

least schizo post

[sonic sentinel]

mental illness isn't funny

also i think its really only hard to read what i said cause i didn't give examples

but i can't think of feasible examples so i had to try to get the general idea across

[raven plaza]

You could just collect it

And look up when necessary

[sonic sentinel]

maybe there are no feasible examples

[raven plaza]

Or if you're trying to capture some general trend instead of a person you could use an AI

[sonic sentinel]

what do you mean? collecting data isn't the problem here, its processing it. and i didn't say it has to be in real-time, so i don't get what you are trying to say.

[dense hornet]

I read that the reason privacy matters is because it prevents people of being wrongfully accused of crimes they never committed

[raven plaza]

Well what is the purpose for the processing

If you're looking for one particular person you don't need to process everything

[sonic sentinel]

yes, this is probably the biggest problem with what i said, you could just use ai. maybe my technique could help with training the AI.

[fervent flame]

im still not convinced anyone knows what youre talking about

[raven plaza]

Generally government surveillance doesn't mean there will be an agent watching you 24/7

[sonic sentinel]

not necessarily, okay say we live in a society where speed cameras don't exist for some reason and you need a human to review footage to determine if a car is moving under the speed limit

[fervent flame]

under

[sonic sentinel]

maybe some people think the speed limit laws are too strict, so they give people more freedom. this is fundamentally because they understand that whether they say "yes its too fast" or "no its fine" will have obvious impacts on actual people

[raven plaza]

Indeed that sounds like a very weird system

But have you noticed all the Google captchas are roadviews

[sonic sentinel]

what if you get some people to review footage they think is, say, for a study on whether people can accurately determine car speed? here there is no obvious impact, so people will most likely not fudge with the data

and you get more accurately who is crossing the speed limit and who is not

[fervent flame]

oh. okay so ur just describing enders game

but with "ai"

[sonic sentinel]

holy shit i just realized my idea isn't that special

[burnt ledge]

FALSE

[sonic sentinel]

any time you read about people being encouraged to report certain activity to authority without truly understanding why its basically the same concept at play

[sonic sentinel]

that is very sad to hear, i hope my statements can be true one day

[burnt ledge]

i hope your surveillance panopticon dystopia can be false one day

[sonic sentinel]

Reception of the book has been mostly positive. It has become suggested reading for many military organizations, including the United States Marine Corps.
-wikipedia

???

(on ender's game)

[fervent flame]

which part confuses you

[sonic sentinel]

who is suggesting

who exactly are they suggesting to

why are they suggesting it

[fervent flame]

i also look at the public reception of something before looking at a summary/synopsis

[sonic sentinel]

no why would they promote a book that essentially seems to be a military dystopia

or did i get the wrong impression from reading the wikipedia introduction

[fervent flame]

ethics?

[sonic sentinel]

ah ok

,ti

[fathom swallow]

The current time for alshfik is 09:30 PM (+03) on Sun, 10/12/2023.

[sonic sentinel]

good night :)

[brave shell]

Solving the problem of processing large amounts of data by massively increasing the amount of overhead through creating tons of pointless busywork and then making people finish that busywork multiple times.

[neat lintel]

sheep

[solid yarrow]

Choco milk

[mint patio]

How can you have f: R -> R such that f is periodic but nonharmonic? A harmonic function is one such that f''(x) = -af(x), where a is a positive constant

As far as I know the only periodic real-valued functions are linear combinations of sine and cosine, and those are harmonic, no?

[sharp cave]

define a function that is not even differentiable on [0,1]. Replace the values on 0 and 1 so they match. Copy paste the function onto remaining intervals.

[mint patio]

Uh

Do you have any non-contrived examples

This is for my Vibrations class so anything physical is good

I just don't understand the top part

Oh maybe like a sawtooth wave is a good example?

Or square wave

[native badger]

this guide looks super helpful

can I have the slides for this class?

[mint patio]

Uh

Maybe

If I remember and if I understand what I'm doing (i.e. my studying goes well)

[sharp agate]

Not to hijack but can I get some help?

[solar hawk]

💀

not to hijack: hijacks

[solar hawk]

!help

[quasi jetty]

To ask for mathematics help on this server, please open your own help channel or help thread. See #❓how-to-get-help for instructions.

[native badger]

<3 I would appreciate it

[burnt ledge]

consider, sin(x)+sin(2x). Periodic with period 2pi but not harmonic in your sense

[neat lintel]

I hate journalists

[pulsar pagoda]

@mint patio https://twitter.com/soychotic/status/1733711976587538623

[mint patio]

I don't get it

[fervent flame]

op is making fun of the software engineer title

[neat lintel]

software engineer and developer are two different things

an engineer is someone who's creating a self driving car.
developer is making pretty animations

[fervent flame]

good thing those are the only two jobs in software

makes it easy to make a distinction

[pulsar pagoda]

most CS people are developers

im going through a developer program basically

but im transitioning to being a real engineer

its hard

lots of self studying involved

even though my major has engineering in its name

[neat lintel]

Question: Is there any particular reason why some people think it's applied when mentioning "Mathematics" besides their personal experience?
Context: Whenever I say I study Math, some (if not many) non-math think I was referring to the Applied side of the subject, not Pure.

[little vine]

A lot of laymen think math ends at what they learned in highschool I'd say

[neat lintel]

it got to the point that I met Biology students who thought there were "labs" and "PIs" in Math because "it's STEM."

[little vine]

The lab is in the mind

[torn willow]

The distinction between software engineer and software developer does not exist

It's whatever the company makes up

Maybe you are a SE, SDE, SD or TM

[charred burrow]

Coz most people think math ends at calculus

[raven plaza]

When math dept has computer rooms for MATLAB and calls it a lab:

[dense hornet]

I would say the majority of my Aerospace degree was doing computer simulations through matlab. They were still called labs despite the fact that I could do a lot of the coding at home on my laptop.

[neat lintel]

I got to do a final right now Hopefully i pass with a 90+ so i can get an A

[exotic forge]

public skool sux

get your degree from youtube university

[dense hornet]

Mood. Atleast YouTube doesn't roast tf out of me with every difficult exam

[neat lintel]

so true

[neat lintel]

I got an 86.25 on the final. It's so joever

I need at least a 90 on the writing assignment to pass with an A

this can't be how i go out

[real stone]

@tough crown #help-28 message dont u use chain rule here

or how do u do it

[tough crown]

yeah i figured it out

chain rule is definitely a bad idea lol

for that case

oh wait are you asking

[real stone]

why?

[tough crown]

because d/dx x^(x-1) is a shitshow

and it's not necessary

check #calculus i posted the way i solved it

[fair mural]

?

just write e^ln(stuff)

[tough crown]

@fair mural (e^(xln(x)-ln(x)) * (x-1+xln(x))) / (x)

you really wanna be having that as your f(x) term for chain rule when you can just use
d/dx (a^(f(x))) = a^(f(x)) * f'(x) * ln
or
y = f(x)^(g(x)) -> ln(y) = g(x) * ln(f(x))

[broken anvil]

hello R studio not working but i generated the coding can anyone help me?

ANYONE?

[sonic sentinel]

the fuck

this kid at the math circle randomly handed me a business card of one of the founders of wolfram research (already forgot which one)

he wanted me to send something creepy as a joke to the email

weirdly the domain of the email is "sabioresearch.com"?

[long matrix]

[sonic sentinel]

what's confusing

there's a math circle right its between schools

so this kid said he talked with one of the founders of wolfram research and he gave him his business card

he wanted me to send something creepy to the email cause he thought it'd be funny

i can't find the email itself anywhere online (like directly searching it gives no results)

now i'm wondering what on earth is the domain of this email

[mystic ivy]

@sonic sentinel mooooooooo

quit stealing my grass !

[sonic sentinel]

moo

[mystic ivy]

dn

[sonic sentinel]

vs chad ill get you whatever the fuck i want

[solid snow]

wrong channel oops?

[brave shell]

All circles are maths circles.

[sonic sentinel]

that's crazy

[rose arrow]

Hi.

I’m creating a desktop python widget that’s basically does a bunch of math. So far I have

Basic math
Trig calculations
Algebra

what other applications would be useful in terms of math

[glass peak]

A link to wolfram alpha

[rose arrow]

But that defeats the purpose of the widget lol

I’m doing this to practice python

[river moon]

solve a nonlinear system of ODEs or compute some integrals

[rocky shuttle]

your widget already does the entirety of algebra, so no need to add other applications

[fallen dune]

calculus(idk what that is)

[rocky shuttle]

small pebbles

[half fjord]

Abstract algebra

[solar hawk]

What algebra

[terse trellis]

ok this is just a general question i wanted to ask not in the help channels but are all trig functions (with the exception of cos/sec) odd?

[river moon]

there's only two trig functions - sin and cos

[dense hornet]

cosh is considered an even trig function...

[vivid halo]

of the standard trig functions (sin, cos, tan, cot, sec, csc) only the functions sin(x), tan(x), cot(x), and csc(x) are odd, while cos(x) and sec(x) are even

[terse trellis]

yeah thats what i meant

[dense hornet]

Sometimes I feel like sinh and cosh are more natural than sine and cosine since they don't require imaginary terms

[glass peak]

Sin and cos don’t require imaginary terms either. You can write them using complex numbers but you can also write them without it, they’re usually defined by their real power series

[zealous garden]

Nothing unnatural about complex numbers

[neat lintel]

terry tao does

[deep mango]

<@&268886789983436800>

[ocean harbor]

https://tenor.com/view/dance-dance-moves-killing-it-smooth-gif-13422478

[neat lintel]

what happened!

[vapid ridge]

guys

who has used notion here

[zealous garden]

Which notion of notion

[vapid ridge]

the study app

[zealous garden]

No

[reef geode]

taking my discrete final tommorow
and im so anxious
ive been studying for 10 days straight

[dense hornet]

Sounds like you put in good effort towards the final.

[neat lintel]

Noice hopefully you're also getting decent sleep

[mild badge]

I'm sure you can do well

Don't forget to take care of yourself
Most people are good at a subject but they get nervous and forget things or get exhausted and can't focus in the exam properly

[mint patio]

I like to watch haircut/shave videos for ASMR, a lot of those travel style YouTubers record that kind of stuff and it’s always so fascinating watching them come to my country (Nepal) and try to talk to my people and work things out. Very cool

[frank orchid]

https://bookriot.com/5-tips-read-faster-without-losing-comprehension/

This section “4. QUIT RE-READING” confuses me as the final line has this statement “Let go of having to fully comprehend every single that’s being said or going on, and you’ll stop wasting time re-treading places you’ve already been.” Is not so-called fully comprehending everything said the definition of reading comprehension. Their justification for this is “Eventually, I realized that I wasn’t actually gaining much comprehension when I re-read. The confusing passages or words eventually made sense in context, or they weren’t necessary for my enjoyment of the book.”

[mint patio]

He asked his name and bro didn’t understand and said “Yes” in Nepali and the YTer was like “your name is <yes in Nepali>”?

🤣

[rich rapids]

@mint patio first time seeing another Nepali here

[mint patio]

Namaste bhai!

It’s funny because one of my friends here who I knew for a couple months

We just talked every so often in public chat

Then one day we got into the same small server

And I found out he was Nepali too

So you’re the second Nepali I know 😛

[rich rapids]

lol namaste. im not really active in this server. so makes sense that i never saw anyone else

[mint patio]

Hehe do you live in Nepal or the US?

[rich rapids]

im in the US rn...

[mint patio]

Ma tin (tihn? teen? how do you spell it? lol) barsa ma Nepal bhada America move gare, since then ma yai hurkeko. Tara every 5 years jati Nepal jaanchu. I don’t speak perfect Nepali but I think I’m pretty fluent, especially for someone raised in the US

[rich rapids]

ah thats good. i know plenty ppl like that. u math major in some college?

[mint patio]

Mechanical engineering. Aile raath bhari padna prepare gardaichu kina vani bholi mero final 6 lol

But math is my favorite subject ^_^ just don’t get the time to study it formally

[rich rapids]

oh... best of luck for ur test.

[mint patio]

Thank you!

[mental stratus]

[exotic forge]

I have very strong sentiment about public school. It's industrial age

We live in the age of information. So these systems are actually holding back society

[lavish kayak]

did you find a good treatment of how to train this?

"just stop subvocalization lol"

[surreal sapphire]

i wouldnt trust this

there was a fast reading craze at some point

but more recent research shows that you lose comprehension a lot

the earliest research on this was bad

because they used very simple text and questions could be answered correctly without even having read the text

which suggested that fast reading techniques dont impact comprehension

[lavish kayak]

yeah i just did a few tests

i could "read" at 400-500 wpm even though i subvocalize

but I only got the bare minimum from the text like if i was scanning a website for the shopping button

but still the thought I could stop subvocalizing is an itch under my skin lol

"what am i missing out???"

[little vine]

I Iike subvocalizing. It's like reading something twice

[long matrix]

well i like fully understanding shit i read instead of just glossing over

[vapid ridge]

hi guys

what do you usually do when you dont understand a passage of what you are reading

do you reread the passage until you understand and figure? or do you continue reading and move tonext page

[mystic ivy]

google the subject

[vapid ridge]

yeah but

its part of a whole tho

like for example in pride and prejudice

“However little known the feelings or views of such a man may be on his first entering a neighbourhood, this truth is so well fixed in the minds of the surrounding families, that he is considered the rightful property of some one or other of their daughters”

Excerpt From
Pride and Prejudice
Jane Austen
https://books.apple.com/ph/book/pride-and-prejudice/id395534643
This material may be protected by copyright.

i undersfand the latter half, but idg the first half ??? fsr

[solid snow]

they dont know anything about him or know him personally

[vapid ridge]

the little feelings of virws part

[solid snow]

that is what that is saying

[vapid ridge]

yeah i can see it now thanks

[neat lintel]

try paraphrasing it, works sometimes

emphasis on sometimes

old books

[solid snow]

what about them

[neat lintel]

hard to read

[vapid ridge]

true sometimes

[neat lintel]

I read scarlett letter and the tale of two cities

I have no idea what the story was about, i was just seeing words

hi

hi

[vapid ridge]

isnt this, sorry for being stereotypical, how shakespearean plays are

like ive heard its soo complex

[neat lintel]

charles dickens is just objectively bleak

theres good classics too

[solid snow]

why not just read them

or watch the play and then read them if you want some sort of primer before reading the text itself

[neat lintel]

literary plays in general arent for everyone

[vapid ridge]

yee but like the actial text itself

[vapid ridge]

(2)

also did literary plays pre date movies?

[solid snow]

i was referring to the text itself

yes

shakespeare is really not that bad if you get past the whole preconceived notion of it being hard or boring

[neat lintel]

you just get the hang of it eventually

that applies to most classics

[solid snow]

shakespeare is honestly easier to read than something like faulkner imo

[neat lintel]

its like, reading russian novels for the first time- shitton of characters and names, painfully long paras, but after about 200 pages you'll begin understanding shit

[dense hornet]

I don't like the way time is treated in the school system. When I was in boy scouts we built multiple sheds and I felt that the most memorable part was not stopping until every aspect of the design was perfect.

Education feels more like throwing a whole bunch of concepts and hoping you remember 70% of it within a super short period of time.

[vapid ridge]

yea honestly

education in and of itself is a good concept naman

but the fact that there is a rating system is flawed cause its very cheatsble

[neat lintel]

I don't know if this is the appropriate channel to ask for this question or if I should take one of the math bot channels, but I'm scheduled to take Calc 3, Linear, and Diff Eq in the spring totaling 12 credits, would it be too much to squeeze in a stats class too for another 4credits, also they all meet on the same day Monday and Wednesday, meaning midterms/finals will exist all on those days

[winged urchin]

whos the best math teacher on youtube help 🙏

[wispy gorge]

which subjects? anything up to calc for calc series of courses I found prof. leonard helpful

[winged urchin]

uh like highschool courses

functions and that

[wispy gorge]

it seems he has courses on algebra as well, and precalc, i'm not sure about it since I've never seen them

though, khan is probably helpful here too

[winged urchin]

ok thanks

[exotic forge]

I agree. It's pretty sad actually.

[dense hornet]

Interesting. I took diff eq with Linear Algebra and it was 2 3 credit classes compressed into 1 4 credit class with a shit ton of homework. I also took my regular aerospace classes alongside that class.

[dense hornet]

Black pen red pen me thinks

Love that guy. He's also a highschool math teacher

[winged urchin]

wtf

why is that his name

LMAO

[exotic forge]

I did this it wasn't that bad. I really liked math though.

[dense hornet]

Not really his name but rather the color of the pens he uses must of the time. Sometimes he progresses onto blue pen when shit gets real though 😱

[winged urchin]

the fans be like {HES USING BLUE WOWW}

.

[dense hornet]

Fax no printer

Guys, why does 1+1=2 Prove it!

[solid breach]

Here You have it ->
https://us.metamath.org/mpeuni/dju1p1e2.html

this is the short version

btw - If you took the long approach and would try to prove 2+2=4 by the longest path available would be 184 layers deep.

The complete proof of 2 + 2 = 4 involves 2,913 subtheorems including the 184 above mentioned. These have a total of 26,323 steps—this is how many steps you would have to examine if you wanted to verify the proof by hand in complete detail all the way back to the axioms of ZFC set theory.

[alpine kindle]

it's further back than that

you need to prove your logical theorems as well

[alpine comet]

@native oriole

Right, so, the path toward eternal ~~suffering ~~ glory

You go to uni, do a Bachelor degree with major in Math. That'll be 3-4 years, depending on where you do it

Then, again, depending on where you do it, the path is different, but in general, you do another 2 years of Master in Math

That deepens your knowledge in a few areas that you like better

Then you do a PhD. Again, it varies, but in general, that takes 3 years. You do nothing but study one problem, and know about it better than everyone else, so you become an expert in that.

Then a bunch of postdocs, basically PhD but now without a degree.

Until you have enough experience, then you apply for a teaching position, and voila, you become an assisstant professor.

Still working your way up the ladder, until the uni says "We like you, and we want you to be here for life.", so they give you tenure. You are free to do research, with minimal teaching obligation

No worries 😄

[golden cliff]

The dates on this explanation are slightly French I feel

PhDs are usually a few years longer than that especially in the US

[alpine comet]

*European. It's the same everywhere in EU

[golden cliff]

Yeah makes sense, France is all I know about haha

[alpine comet]

except in US there's no Master stage

[golden cliff]

Yeah, was gonna say that too

[alpine comet]

you can Master out after 2 years

again, in general

but that's the same timeline anyway

[dense hornet]

Would you say tenure is the ultimate means of acceptance into a university?

[golden cliff]

I mean it's about the best job security you can have

[alpine comet]

in terms of job security, yes. Not in terms of power

the ladder goes up and up

[dense hornet]

It's interesting seeing the schools my professors came from. Makes me feel like I'm in a super prestigious school 😅

[dense hornet]

The football coach and then the chancellor...

[near moss]

Jus become a quant

U work till ur 30

[exotic forge]

Quants seem kinda stressful tho

[alpine comet]

They actually have far better work-life balance than academia

[exotic forge]

But atleast academia ur researching and doing something you like... quants manage fortune 500 companies liquid debt lol

[fervent flame]

most informed take

[little vine]

https://soundcloud.com/cali5nia/emastered-night-hd-1?si=bb6287f0d8ea4ff3acb6115f91347e2f&utm_source=clipboard&utm_medium=text&utm_campaign=social_sharing

[raven plaza]

A song

[little vine]

Just a thing I made on a couple hardware synths I got

[solar hawk]

:0

[neat lintel]

i feel like playing guitar again. should i tho

[errant kayak]

if the derivative of a continuous function, is only 0 in a countable number of points and positive everywhere else, does that mean the function is striktly monotone
or only monotone

[raven plaza]

Strictly

[rare hare]

server suggestion: include a clause clarifying that the @quasi jetty is not a newfangled AI able to parse and answer math problems

it is implied, but clearly never stated explicitly enough, unless i missed something

[surreal sapphire]

uhh

how is this implied

[rare hare]

in #❓how-to-get-help, for example, the list uses phrases like "no one"
implying it is actually fleshy humans answering, not bots

sorry, i meant that it's implied the bot is NOT an AI; poor phrasing on my part

[surreal sapphire]

the bot is not an AI

humans answer questions

[rare hare]

indeed

[surreal sapphire]

the bot just moves channels around

[rare hare]

i know, that doesn't contradict anything i wrote

i was referring to people getting confused about it

[surreal sapphire]

but why would anyone think the bot is an AI in the first place

[rare hare]

great question, but i've been here for a short time and already seen it happen more than once

[rare hare]

my guess, if it matters: perhaps because it's a rapidly developing field and not everyone knows what its possibilities and limitations are

[surreal sapphire]

uhh

i honestly dont see any need for us to change our communication

if people have such assumptions its an issue on their part and there is nothing we can do

[rare hare]

lol, perhaps you're right

one example if you'd like to look into it: #help-23 message and above
(it wouldn't be a stretch to say that the confusion contributed to this person not getting help, which is why i wanted to make sure you were aware - i wasn't trying to be rude or anything of the sort)

[sonic sentinel]

what the fuck are you supposed to do when your sick

it feels like my muscles are turning to stone

[rocky shuttle]

count

[raven plaza]

sheep

[sonic sentinel]

💤

[neat lintel]

white indians needed for SA

[fervent flame]

uh i looked thru the past 2 days and didnt see anything, can u link the msg

[muted totem]

Sorry to xpost but discussion became full

Is it bad netiquette to reply to someone's days-old solution to an exercise in order to save it in your message history for future reference?

[tiny forge]

Alternatively, make a private server and copy message links into it for reference

[muted totem]

Oh didn't know you could do that, thanks

[jolly kelp]

i need help with simulatinous equations

[mental stratus]

[rocky shuttle]

[last creek]

He didn't say the equations were linear

[river moon]

[ocean harbor]

Java test went like shit

I failed it I'm pretty sure

[rocky shuttle]

[frigid gull]

someone wanna help in 0

[ocean harbor]

!noadvert

[quasi jetty]

Please do not advertise your help channel or thread in other parts of the server. There are many people who need help, so advertising can quickly turn into spam.

[alpine comet]

You never know. Gotta believe in the curve.

Plus, fail or pass, what can u do anymore?

[ocean harbor]

idk

redo probably

[alpine comet]

you need a break. A very good break.

Some days are fucked and cannot be unfucked.

[ocean harbor]

you right

[alpine comet]

Try again tomorrow. Let today be fucked.

[ocean harbor]

cannot really have another chance if i want to redo the test since this is fucking highschool

my java teacher so strict to be honest

[alpine comet]

lmao

programming class in HS is shit universally

[ocean harbor]

yea

[alpine comet]

dw, it won't make a dent in the very far future,

[ocean harbor]

it's really the teacher dependent

the one im doing is grade 12

in grade 11 I did cpp and my teacher was fine

idk why this one more shit

[dense hornet]

I'm honestly glad I chose aerospace engineering almost purely out of an interest in aviation. If it wasn't inspired by passion, I probably would have wished I wasn't born in the first place.

[sleek pagoda]

$4\int_{0}^{1}\left(1-x^{4}\right)^{\left(\frac{1}{4}\right)}dx$ I needed to solve this integral

[fathom swallow]

TimesZeroed

[sleek pagoda]

and it lead down a rabit hole

about the laplace transform and convulutions

and the proof of what it equals is like 114 lines long

Each line is about the length of one equation

[dense hornet]

Interesting. That is a really weird integral

[vague forge]

does anyone have a hp prime calculator here, im struggling to figure out how to adjust the brightness of the screen

[little vine]

https://youtu.be/Yumw3N4p_eg?si=JeLJ4dX3WcFC_YAa
I wonder how long it will take me to learn this

[deep mango]

TF

i didnt know you could solve that

[dense hornet]

Sounds like a nice song. I used to play a lot of classical guitar and it was really challenging but fun

[little vine]

Yeah I'm sorta intermediate? I love it

Hardest thing I can play I think is the Bach Cello prelude

But I'm a little sloppy at it and it needs work still

[little vine]

This on looks super fun

[dense hornet]

I used to have this song memorized but even then, it was difficult to play perfectly. I feel like Andrew York inspired me with all of his contemporary songs. https://youtu.be/okbWHXwx6YA?si=3g3j9nrcNOFPTPDH

I guess I can't embed since I'm not "active"

[little vine]

Put it in chill

I'll look

[pulsar pagoda]

ive used to play that

it took me about 4 years of training to get to be proficient

[little vine]

You don't play anymore?

[pulsar pagoda]

no

my brother inherited my 3k guitar

hes training with my former teacher currently

[little vine]

Get another guitar bro

[pulsar pagoda]

im too busy

math

learning hardware stuff

finishing college

[little vine]

I see

[pulsar pagoda]

i used to study 8 hours a day

for like 6 years

but im 28 now

I need to get a job

[little vine]

Math or music?

[pulsar pagoda]

music

[little vine]

Oh damn

That's how you can play tango

[pulsar pagoda]

I also played parts of la catedral from barrios

and barrios vals 3

plus some stuff from heitor villalobos

[little vine]

I have a villalobos book

[pulsar pagoda]

his 12 studies

are fundamental

[little vine]

But I'm working through parkingning method 2 rn

[pulsar pagoda]

a lot of people play the 12 studies

as first years in UCR music school

[pulsar pagoda]

i used that

its too ez

[little vine]

I gotta play more. Learn more theory too

Not for my level

[pulsar pagoda]

at the beggining its fine I guess

cause it does get into the proper finger picking

but it lacks arpeggios

[little vine]

You mean the exercises?

[pulsar pagoda]

yes

those are important

[little vine]

I only do the repetoire

[pulsar pagoda]

no

u wont build resistance that way

[little vine]

Resistance to what

[pulsar pagoda]

from the muscles in ur fingers

look for abel carlevaro arpeggios

[little vine]

Ok

[pulsar pagoda]

and cuadruplos from abel carlebaro

its *carlevaro actually

[little vine]

I can't find it on Amazon

[pulsar pagoda]

accept the request

carlevaro is famous for establishing a school in latin america thats based on anatomical principles

playing classical guitar witouth the proper techniques can lead you to injuries

all his content is written with his medical expertise in mind

[little vine]

Cool

[pulsar pagoda]

i think my brother has better pdfs

from my teacher

ill see if he gives them to me

when i attended all i got from him were paper prints

I have a whole suitcase full of music paper prints

[little vine]

Tbh I sacrifice my potential for what's fun to me. Like I play my electric over my right knee

Few drills right now, mostly repertoire

[pulsar pagoda]

ull benefit a lot from following his advice on the left hand side

specially how he shows the positioning of the thumb in the neck of the guitar

it sort of hurts at first

but that is the right way to do it

[little vine]

Let me look

[pulsar pagoda]

@little vine page 69 from the pdf

[little vine]

It's a front facing view. That doesn't help me much

[pulsar pagoda]

keep going

page 77

starts with the thumb

[little vine]

Kinda a grainy picture

Oh

[pulsar pagoda]

@little vine https://www.youtube.com/watch?v=UGsf9D8G2QI&ab_channel=tonebaseGuitar

[little vine]

I just realized

I'm looking at 69 on the PDF not the book

[little vine]

I'll watch it

[pulsar pagoda]

https://www.amazon.com/-/es/Abel-Carlevaro/dp/0204700213/ref=sr_1_36?qid=1702517272&refinements=p_27%3AAbel+Carlevaro&s=books&sr=1-36&text=Abel+Carlevaro

https://www.amazon.com/-/es/Abel-Carlevaro/dp/B005OSZ84Q/ref=sr_1_18?qid=1702517247&refinements=p_27%3AAbel+Carlevaro&s=books&sr=1-18&text=Abel+Carlevaro

https://www.amazon.com/-/es/Abel-Carlevaro/dp/B00COYU32A/ref=sr_1_16?qid=1702517312&refinements=p_27%3AAbel+Carlevaro&s=books&sr=1-16&text=Abel+Carlevaro

https://www.amazon.com/-/es/Abel-Carlevaro/dp/B00COYX5B6/ref=sr_1_15?qid=1702517312&refinements=p_27%3AAbel+Carlevaro&s=books&sr=1-15&text=Abel+Carlevaro

https://www.amazon.com/-/es/Abel-Carlevaro/dp/B00CNVH1SI/ref=sr_1_21?qid=1702517323&refinements=p_27%3AAbel+Carlevaro&s=books&sr=1-21&text=Abel+Carlevaro

@little vine get the three volumes if u can their on english

and are a must have

[little vine]

Ok

[pulsar pagoda]

the other the studies are good

but u can find their pdf

easily

there are many different schools for technique

normally a teacher would give u inputs from different schools based on ur anatomy

[little vine]

Yeah I have no access to a teacher

[pulsar pagoda]

but the anatomy of ur hand sort of constraints ur style

thats why guitars are also make to fit the individual

sort of like a suit

since we share genes my brother doesnt have a hard time with the dimensions of my guitar

specifically our hand anatomy is similar

[little vine]

I see I see

I'm don't really have a lot of ambition for it enough for that to matter to me

Like, going to a luthier to get a guitar fitted to me. I like my guitars already

I'm surprised you gave it up though

[pulsar pagoda]

theres no future in it here

[little vine]

It's still fun

It sounds like you got really burned out on it

[pulsar pagoda]

I got accepted in the best school for music in the country

but that was not paying the bills

and it would not do it in the future

I knew people who were way better than me

and had no prospects economically

[little vine]

Well do it still as a hobby I meant

[dense hornet]

This is really interesting to read about. In another hypothetical life, I would have majored in Music but in this life I ended up taking a break from saxophone playing to focus on Aerospace Engineering.

[pulsar pagoda]

cool

mechanical and electrical engineering at its finest

[zealous garden]

BS

Don't need no personalized fits

Just make sure you get the right neck profile (C) with the right finish (satin) and the right scale length (27")

[pulsar pagoda]

i have a luthier for my guitar

idc what u say

[zealous garden]

How much do you spend on that luthier

[pulsar pagoda]

when he gives maintenance its about 300

dollars

[zealous garden]

But moreso, bullshit your hand anatomy limits your styles

That's quitter talk

[pulsar pagoda]

but he does that like every 4 years

have u studied classical guitar at all?

[zealous garden]

Classical guitar? Waste of time

[pulsar pagoda]

ok

[zealous garden]

How are you gonna plug that into a distortion pedal

[pulsar pagoda]

why would i need to do that?

[zealous garden]

Thats your style limitation right there, not your hand anatomy

[pulsar pagoda]

bro

its completely different

electrical guitar is easier than classical

[zealous garden]

Yes and?

[pulsar pagoda]

thats not even a fucking discussion

[zealous garden]

People will still take a classical and do the same shit as an electric

Within reason of the tech

I'd rather play a classical than an electric with 14s tuned to standard like I used to do

[pulsar pagoda]

classical with 14 strings

lol

[dense hornet]

My classical guitar is $500 😅

[zealous garden]

How much tension are the strings in a classical really under

Legitimate question

[pulsar pagoda]

depends on the type of string u choose

theres different

[zealous garden]

I know in an electric they usually range 12-20lbs, on a bass they usually run about 40lbs

[pulsar pagoda]

https://www.amazon.com/-/es/DAddario-Pro-Arte-Cuerdas-guitarra-clásica/dp/B0013PVWCQ/ref=sr_1_2?__mk_es_US=ÅMÅŽÕÑ&crid=SEYWCMOE16G7&keywords=d%2Baddario%2Bguitar%2Bstrings%2Bnylon&qid=1702522408&sprefix=d%2Baddario%2Bguitar%2Bstrings%2Bnylon%2Caps%2C149&sr=8-2&th=1

so look

[zealous garden]

A standard gauge in E standard on a standard scale length

[pulsar pagoda]

thats normal tension

but people use high and other types

[zealous garden]

Normal tension is about the same as EG numbers

[pulsar pagoda]

so what is ur point?

like there are off the shelve guitars that u could buy from a retail store

i dont get those

I had mine custom made

[zealous garden]

So what else do you have affecting playability, the action?

[pulsar pagoda]

but that was 3 years into studying

like im not saying u cant start with a cheap one

im saying that once u get serious it is a necessity

[zealous garden]

You can start and end with a cheap one, don't lie

Oh classical

[pulsar pagoda]

yes

-.-

[zealous garden]

I rescind the cheap

I'm confident you don't need to go custom

[pulsar pagoda]

i studied classical for 6 years

[zealous garden]

You'll never convince me on that point

[pulsar pagoda]

8 hours a day

do u know what that does to ur fingers?

the kind of injuries u could get

thats well documented

https://douglasniedt.com/injuryprevention.html

[zealous garden]

I don't get the point

[pulsar pagoda]

bro

the guy says

[zealous garden]

Any instrument will need special care if you're doing it for 8+ hours a day

[pulsar pagoda]

MAKE SURE THE GUITAR IS RIGHT FOR U

holy shit

yes

and thats what im saying

I was doing that kind of training

[zealous garden]

That's completely different from just being limited in style choice by anatomy and genetics

[pulsar pagoda]

thats also a thing

the thickness of ur hand affects how much weight u can put behind the attack to the strings

like the thickness of ur fingers

for example

but thats for right hand technique

[zealous garden]

I'm not listening to any talk of "I can't play it cus I wasn't born special enough"

[pulsar pagoda]

Im not saying that u dumb dumb

im saying that depending on ur anatomy

techniques make a difference

[zealous garden]

Hold on

[pulsar pagoda]

https://www.youtube.com/watch?v=G2rSp5fG4CI&ab_channel=JorgeCaballero

[zealous garden]

Did you mean technique when you said style

[pulsar pagoda]

yes

[zealous garden]

I've been interpreting it as genre

[pulsar pagoda]

in context

[zealous garden]

In context, it looked like genre to me

[pulsar pagoda]

I was talking about the school technique style

theres different techniques from different schools

the carlevaro school is one

but segovia had his own

and jhon williams also documented his own

[zealous garden]

Do any of them shred

[pulsar pagoda]

u mean vibrato?

[zealous garden]

No?

I mean shredding, typically recognized within the metal tradition

High speed technical playing

[pulsar pagoda]

ahh

sec

https://www.youtube.com/watch?v=aeN7Sd0kOAM&ab_channel=cristtadivariuss

[zealous garden]

You don't need distortion for it to be shredding, but it's better with it

[pulsar pagoda]

i played that

also same speed at the recording

[zealous garden]

That's shredding, put that behind a TC Electronics or a BOSS pedal, fire

I don't like guitar

I play bass

[pulsar pagoda]

so as i was telling u the only reason that child can perform that is due to the instrument being made for her

[zealous garden]

Nah I don't believe you

I can believe she couldn't do that on just any guitar

I've felt the difference a different neck shape or string spacing or ... makes

[pulsar pagoda]

it would not be as clean

theres also a difference

theres necks that are round

and some that are flat

[zealous garden]

Yes

But she could probably find a good enough one without getting it custom made

[pulsar pagoda]

professional classical guitarist

have them custom made

[zealous garden]

If you're a professional it's more reasonable to get it custom made regardless of the benefits

[pulsar pagoda]

I know this cause i speak and studied with multiple classical guitarist

for years

[zealous garden]

And you're more likely to come up with bullshit to justify your large expenses

Like the guy who insists the audio cables have to be the special brand that uses pure silver internals

[pulsar pagoda]

like do u know that the wood u use affects the timber of sound

lol

[zealous garden]

Of course I know that

That's one of the first things you learn

[pulsar pagoda]

thats one of the reason for example they use different guitars for baroque

[zealous garden]

Maple makes it snappier, Ash and Alder help absorb higher frequency noise

It's less important in Electric Guitars

Which means people talk about it even more

[pulsar pagoda]

https://classicguitar.com/classical-guitars/2007-14-jim-redgate-spruce-ana-vidovic-model/

mine is like that one

[zealous garden]

I have a couple guitars/basses

[visual burrow]

food

[mystic ivy]

food

[vernal token]

During electrostatic induction, do all protons go to one side and all electrons to the other? I was told it's not actually like that, they only go a little bit to the right and left and they're still mixed?

@solid snow or @pearl moth are you here, lol?

[rocky shuttle]

protons stay where they are

[sly flint]

Protons stay where they are, but there is a net positive charge on one side caused by the deficiency of electrons.

[tawdry pike]

I was thinking right, if I pushed a ball across a table, it take time for the ball to go from a to b. Than I thought about set theory and how a number was defined in the Principia Mathatica and how B. Russel was able to disprove their definition of a number by stating what about the set that contains all sets that do not contain themselves. And from that a contridiction occurs. But does this contridiction only occur if the '∈' is instant. If numbers stem from logic and logic tells us that an action can not be instant than should the manipulation or evalution of numbers be non-instant. And therefor some time value must be asigned to ∈ which would disprove the contridiction???

[solid snow]

?????

[sly flint]

its crankin time

[surreal sapphire]

please dont post falsehoods

[vernal token]

Oh

[vernal token]

Thanks

[vernal token]

By the way for the energy in a capacitor, we have that [E_{el} = \frac 1 2 C V^2.] Now, if we differentiate, we get [D(E_{el}) = C \cdot V.] And apparently, that is equivalent to $P = V \cdot I$. Why?

C = Q/V, so shouldn't we rather have P = Q

[vernal token]

(this is similar to what we did when we talked last time, but now, finding the energy of the capacitor)

And my notes have this

[solid snow]

Differentiate with respect to what?

[vernal token]

t

[neat lintel]

Electric potential is defined as energy per unit electric charge, so electrical energy per unit electric potential is equivalent to electric charge.
Note that here you are differentiating w.r.t. V for this to be true, not t. If you differentiate w.r.t. t, you get CVV' = QV' where Q is dependent on time. This is indeed equivalent to Power

[vernal token]

Thank you

[vernal token]

differentiate w.r.t. t, you get CVV' = QV'
how did you get that?

What did you differentiate?

[neat lintel]

C is constant

[vernal token]

Yes

[neat lintel]

V can be a time dependent function

So chain rule

[vernal token]

Oh

[neat lintel]

Equivalent to differentiating (f(t))² w.r.t. t

[vernal token]

Ok, so we have CVV' on the RHS

[neat lintel]

Yes

[vernal token]

On the LHS d/dV E

[neat lintel]

Yes

[vernal token]

Why is that P?

[neat lintel]

No wait

It's dE/dt

[vernal token]

Oh

true, yeah

[vernal token]

So P = CVV'

How does that simplify to V*I

[split pawn]

...

MEOW

Good morning Kepe

[vernal token]

Gm Muhammad

[neat lintel]

It's coulomb times volt per unit time which is ampere times volt

[split pawn]

What's the question?

[neat lintel]

Here.

[vernal token]

#serious-discussion message

[split pawn]

Differentiate with respect to?

@vernal token

[vernal token]

C/V * V * V/t

So C * V/t

[vernal token]

t

[split pawn]

So uh

[neat lintel]

Here C is coulomb and C/t is just current (ampere)

[split pawn]

$\dot{E_{cap}}=P=CV\dot V$

[vernal token]

So A * V, yep

[split pawn]

So uh

[vernal token]

C = Q/V

[split pawn]

what exactly are we trynna get here?

[vernal token]

So we have CVV' = Q/V * V * V'

That's Q * V'

[split pawn]

Hm?

[vernal token]

V' = I

Wait

[neat lintel]

No

[split pawn]

How is V' = I

$\dv{V}{t}\neq i$

[split pawn]

@vernal token what is P=VI?

Like tell me what it is.

[vernal token]

power = voltage times current strength

[split pawn]

Yeah

Like what kinda power is it

[vernal token]

Wdym

[vernal token]

oh

[split pawn]

How do you arrive at it

[vernal token]

Q' = I I guess

[split pawn]

How is this power significant

[split pawn]

Yes.

[vernal token]

d/dt E = P

[split pawn]

That power is due to Joule heating

And that energy one of the capacitor... That's the energy stored in a capacitor

[vernal token]

So if we have E = 1/2CV^2, then differentiating after t, we get P = CVV'. Can we simplify that to V * I without looking at just the units

[split pawn]

No we can't because they're two different things

One is energy released due to Joule heating

[vernal token]

Oh

[split pawn]

Another is energy stored inside a parallel plate capacitor

I mean I don't see a direct way rn

So like...

Q is the charge stored in the capacitor

And C is the capacitance

But the wire itself doesn't have something as a capacitance

[vernal token]

Well that's weird, in my notes I somehow have
E = 1/2CV^2
=> d/dt E = C * U
=> P = C * U
=> P = U * I

[vernal token]

Ok I have a different question, wait a sec

[vernal token]

Now, current flows from the smaller plate, right?

[vocal roost]

Cool, I smell Ohm's law.

[vernal token]

No

There is no Ohm's law here

This is just a circuit with a capacitor

[vocal roost]

I haven't gone through capacitors yet so I didn't know.

[split pawn]

Kepe lemme finish praying

[vernal token]

Oh, ofc

[split pawn]

@vernal token

[vernal token]

Yes

[split pawn]

Okay so wait

what

s

the X

[vernal token]

a lamp

the C is a capacitor

[split pawn]

Oh

Why is the capacitor shorted

[vernal token]

wdym

[split pawn]

As well as the lamp

That ammeter is shorting the capacitor isnt it

[vernal token]

Hm, idk, this should measure V and I while charging and decharging the capacitor

So that we can draw graphs

[split pawn]

You said current strength so

[vernal token]

yes, I

[split pawn]

So current strength is measured in series, not parallel

[vernal token]

Then what do we measure here?

[split pawn]

In parallel, you'd like a voltmeter for voltage measurements

[vernal token]

Oh wait

[vernal token]

Actually, that should measure V

not I

[vernal token]

Ok so then it should be fine. We measure V

that should be fine in parallel

[vernal token]

So my question is, if we don't use the switch, the lamp won't glow yet, right?

[split pawn]

Well

Initially, no?

No.

[vernal token]

Well it depends on the convention we use for current flow, right?

If we say it's technical (from + to -), then no it won't glow.
If we say it's physical (from - to +), then it will glow

[split pawn]

The circuit should be complete

There's no potential difference essentially if the circuit isn't complete

[vernal token]

I'm talking about current flow

[split pawn]

yeah well current won't flow unless there's a potential difference

,rotate

[vernal token]

Would you assume current flows from + to - though here?

[split pawn]

That's the convention. Doesn't matter, either way, a potential difference needs to be acquired across two ends of the lamp

[vernal token]

Alright, thank you

[split pawn]

Hm so your lamp won't glow if the switch was off

[vernal token]

Yeah, but if it was on

It should glow

And the capacitor should charge

And V should be measured

[vernal token]

How does this measure anything about our capacitor though

[split pawn]

"U"?

[vernal token]

It just measures the V of our current

[split pawn]

Wait I need a better diagram from your side

[vernal token]

V, sry

not U

[split pawn]

Idk why you added the lamp

[vernal token]

This is from my notes from class

[split pawn]

I mean well when you charge your capacitor

That lamp will discharge it when the charging is cut off

[vernal token]

We want to get something like this

(read U as V)

(read Laden as charging and Entladen as decharging)

And apparently, with our circuit, we can measure exactly that?

This is about how a capacitor behaves when charged and decharged

[split pawn]

And this graph is obv for the capacitor

What else would charge and discharge?

[vernal token]

Yes it's for the capacitor

[split pawn]

Hm

So

The first two blocks

Are for when the current is on

from the source

[vernal token]

Which blocks

You mean the lamp and C?

[split pawn]

I meant in the graph

[vernal token]

Oh

[vernal token]

Well yes we can measure this with our circuit that we built. But now, does this explain why we needed the lamp?

[split pawn]

Well I don't see why you'll need the lamp.. actually

[vernal token]

Perhaps just to signal it's charging

[split pawn]

Well yeah

[vernal token]

Oh

[vernal token]

Ok, so we get these graphs

[vernal token]

Doesn't that show that V' = I

Atleast for the capacitor

Right?

[split pawn]

Sooo u

$$Q=CV$$
$$\dot Q = C\dot V$$
$$i \propto \dv{V}{t}$$

[split pawn]

There's what you want

not equal to

[vernal token]

oh

[split pawn]

Unless ofc there's a 1 farad capacitance

Sorry I was very preoccupied earlier

Also

You were comparing Joule Heating to energy stored in a capacitor

so yeah I didn't go about this way

Sorry

@vernal token

[vernal token]

Ok, by the way, we have that [E_{electric potential} = Q \cdot \mathcal E \cdot s] but also that [E_{electric} = \frac 1 2 \cdot C \cdot V^2,] right?

[split pawn]

s is?

[vernal token]

distance/height

[split pawn]

ummm

What's E_electric potential

V?

or energy

[vernal token]

E_potential energy I should've named it

it's energy

[split pawn]

Okay wait I need to see how you arrived at it

The first one

[vernal token]

curly E * s is potential

So it's Q * potential

[split pawn]

THAT is electrical field?

Fr

I was thinking of epsilon

bruh

[vernal token]

So do you know this formula?

Q * curly E * s

For energy

[split pawn]

Is it like a standard formula

Ive never heard of it

I mean we just know that

Ive never heard of that tbh

U = QEs...?

no

Like

it looks familiar with something for a single charge

or rather

QEd

[vernal token]

I can't really find it on English wikipedia, but like

[split pawn]

Bruh its literally that

[vernal token]

https://www.abi-physik.de/buch/das-elektrische-feld/elektrische-felder-2/

they use W as energy

[split pawn]

Energy required to move

Q charge

Through an electric field

E

for a distance d

I mean sure

Hm so youre right

[vernal token]

So my question is, is the formula E_potential energy = Q * curly E * s the same as E = 1/2 * C * V^2?

Because my notes for the second just say E_electric

Not E_potential energy

So I wonder if they describe the same energy

[split pawn]

Well yeah

Theyre the same

Isnt the energy you put into the capacitor to carry charges just stored in it?

yes

(unless its an AC circuit)

So yep

I mean the final result you get is just the same thing

[vernal token]

So Q * curcly E * s = 1/2 C * V^2

C = Q/V

So Q * curly E * s = 1/2 * Q/V * V^2

So Q * curly E * s = 1/2 * Q * V

So curly E * s = 1/2 * V

So V/d * s = 1/2 * V

[vernal token]

Do we have d = s?

Then V = 1/2 * V

Uh

[split pawn]

What's d?

[vernal token]

$\mathcal E = \frac U d = \frac{F}{Q}$.

distance

[split pawn]

Isnt d just s?

[vernal token]

between the plates

[vernal token]

Well but V = 1/2 * V is obviously not true

[split pawn]

What youre doing here is back subsituting

Like

You already have

You already have $$\mathcal Es=\frac12 V$$

Then you say $$\mathcal E=\frac{V}{s}$$

[split pawn]

What could possibly go wrong?

[vernal token]

Uh, what do you mean

[split pawn]

if E = Vs/2

Then why say E=V/s

The original definition is E=dv/dq

[vernal token]

E = V/d is always true. If we plug that in and we obtain a wrong statement, then there mut be a mistake somewhere

[split pawn]

Not really

Since $V=\int{\vec E \cdot \vec{\mathrm dr}}$

[split pawn]

Can we have $\vec E=E(\vec r)$

[vernal token]

Oh wait

So in

The first formula gives us the energy at just one point in an electric field

The second gives us the total energy in our capacitor

So they're not the same, right

[split pawn]

Unless it is uniform so yes

[vernal token]

uniform?

[split pawn]

Yeah I mean in a uniform electric field

For n charges of magnitude q

[vernal token]

homogenous?

[vernal token]

Is uniform equivalent to homogenous?

[split pawn]

More like

The same everywhere

If the charge moves

[split pawn]

@vernal token sorry I'd gone off to dinner

[split pawn]

Non uniform fields might change with distance

[vernal token]

Ok, can I annoy you once more, lol
So we have following values:

d in mm: 4.0 3.0 2.0 1.0
Q in μC: 4.4 5.7 8.7 17.4

[split pawn]

Yeah why not, also you're not annoying or anything

[vernal token]

And we need to determine $\varepsilon_r$ {\bf using all of them}. We have that [\varepsilon_r = \frac{Q \cdot d}{A \cdot U \cdot \varepsilon_0}] and we have that $A$, $U$, $\varepsilon_0$ are given constants.

[split pawn]

We gotta calculate the voltage or capacitance?

Ohhh

[wicked cedar]

This is why i love this server

[vernal token]

So my question is, how do we use all of them

[split pawn]

Okay well

[vernal token]

We can calculate the mean, of course, by doing (d_1 * Q_1 + d_2 * Q_2 + ...)/4

But my teacher advised against this

He said there is a more elegant way

What is that?

[split pawn]

Put Q and d, like as in tuples/ordered pairs

Lemme think

Wait I need to do both calculations in order to...

hm

so

,w (44.4+45.7+2*8.7+17.4)/4

[vernal token]

I can tell you what my book does in the solutions. It says that through "halving", we get Q * d = 17.4 * 10^-9 cm.

Since we have
d in mm: 4.0 3.0 2.0 1.0
Q in μC: 4.4 5.7 8.7 17.4
Q * d in 10^-9 Cm: 17.6 17.1 17.4 17.4

[fathom swallow]

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Requested by muhammadhussaini